Flint River Ranch 6" Bully Sticks come from South American and Cost Rican free-range, grass-fed cattle, and the bully stick pizzles are completely chemical-free. The low-to-no odor is a result of the proper processing of the freshest cattle products. The bully stick are oven-baked for extra flavor and cleanliness, and all batches are tested to ensure safety and the highest possible quality.